Pump repair nine major methods and troubleshooting of pump equipment Cheats Daquan: Pump card main, pump is not drained, pump drained after the interruption of nine major pump maintenance Frequently Asked Questions Pump users experience has always been the pain point, Pumping urgent needs of Asian users, summary Pump repair and troubleshooting nine methods: Nine major methods of pump repair and troubleshooting pump equipment Cheats Daquan Pump troubleshooting tips, more important To grasp the pump troubleshooting skills, you must know the pump The working principle, the structure of the pump structure, and the necessary operating skills and mechanical maintenance common sense, with this knowledge, we can quickly determine the fault under the pump abnormal circumstances. Pump troubleshooting and handling techniques specifically: 1, the pump stuck, the method is to use hand-drive coupling inspection, disintegration inspection if necessary, to eliminate static and dynamic part of the fault. 2, the pump is not liquid, insufficient pump (or pump gas is not discharged). The treatment method is to re-pump; pump steering wrong. Approach is to check the direction of rotation; pump speed is too low. Processing method is to check the speed, increase speed; filter plug, the valve is not working. Approach is to check the filter to eliminate debris; suction height is too high, or suction vacuum tank. Approach is to reduce the suction height; check the suction tank pressure. 3, the pump after the interruption of liquid discharge, causes and treatment methods, suction pipe leakage. Treatment is to check the suction side of the pipe connections and packing box seal situation: filling pump suction side gas is not discharged finish. Treatment is required to re-pump; suction side suddenly blocked by foreign bodies. Treatment is to stop pumping foreign body; inhalation of large amounts of gas. Approach is to check whether the inlet whirlpool, submerged depth is too shallow. 4, lack of flow, the reasons and treatment methods, the system increased static lift. Approach is to check the liquid height and system pressure; resistance loss increases. Approach is to check the pipeline and check valve and other obstacles; shell and impeller wear ring wear too much. Treatment is to replace or repair wear rings and impeller; other parts of the liquid leakage. Approach is to check the seal and other parts; pump impeller blockage, wear and corrosion. Treatment is cleaning, inspection, exchange. 5, head is not enough, the reason and approach, impeller mounted anti (double suction wheel). Treatment method is to check the impeller; (Welcome attention WeChat: Pump Friends ring) liquid density, viscosity and design conditions do not match. Approach is to check the physical properties of liquids; operation flow is too large. The solution is to reduce the traffic. 6, pump vibration or abnormal sound, the reason and treatment. Vibration frequency of 0 to 40% of the working speed. Too large bearing clearance, loose bearings, impurities in the oil, bad oil (viscosity, temperature), blistering due to air or process fluid, poor lubrication, bearing damage. Treatment is checked, take appropriate measures, such as adjusting the bearing clearance to remove impurities in the oil, replace the new oil; vibration frequency of 60% -100% of the working speed, or sealing gap is too large, loosening of the guard, sealing wear. Treatment is to check, adjust or replace the seal; vibration frequency of 2 times the operating speed, misalignment, loose coupling, seal friction, deformation of the shell, bearing damage, bearing resonance, thrust bearing damage, shaft bending, poor coordination . Approach is to check and take appropriate measures to repair, adjust or replace; vibration frequency n times the working speed. Pressure pulsations, misalignment, shell deformation, seal friction, pedestal or foundation resonance, piping, machine resonance; reinforcement of foundation or piping; very high vibration frequency. Shaft friction, seals, bearings, imprecise, bearing jitter, poor shrink fit and so on. 7, the cause of the bearing fever and treatment methods, scraping the bearing pads do not meet the requirements. Approach is to repair bearing pads or replacement. Bearing clearance is too small. Approach is to re-adjust the bearing clearance or scraping; lack of oil, poor oil quality. Approach is to increase the oil or replace the oil; bearing assembly is not good. Treatment is required to check the bearing assembly, eliminating the undesirable factors; cooling water circuit. Approach is to check, repair; bearing wear or loose. Approach is to repair the bearing or scrapped. If the pine association, compound the relevant bolts; pump shaft bending. Treatment method is to correct the pump shaft; rejection oil ring deformation, rejection oil ring can not rotate, with no oil. Approach is to update the oil slinger; poor coupling or axial clearance is too small. Approach is to check the alignment and adjust the axial clearance. 8, the shaft seal heat, the reasons and treatment packing pressed too tight or friction. Treatment is to relax the packing, check the water seal tube; water seal and water seal tube dislocation. Approach is to re-check alignment; flushing, poor cooling. Approach is to check flushing cooling circulation tube; mechanical seal failure. Approach is to check the mechanical seal. 9, the causes of the rotor movement and processing methods are as follows, improper operation, operating conditions away from the pump design conditions. Approach: Strict operation, the pump is always running near the design conditions; the balance is not smooth. Approach is to clear the balance of pipe; balance plate and balance plate material substandard requirements. Approach is to replace the material to meet the requirements of the balance plate and balance plate seat. [Editor's note] Asian pump network is willing to pump maintenance nine ways to help pump users solve problems, so that there is no hardship in the world of pumps! Industrial Internet (Xiamen) Technology Co., Ltd. Asia Pump Network (CEO QQ / WeChat:) Editor: Spring (QQ / Wechat:) http://beng.liuti.cn/ (Service Hotline:)
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